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Updated: Jul 19, 2026

Post-Myocardial Infarction Heart Failure in Closed-chest Coronary Occlusion/Reperfusion Model in Göttingen Minipigs and Landrace Pigs
Published on: April 17, 2021
Use of valsartan in post-myocardial infarction and heart failure patients
Peter P Liu1, Aldo Maggioni, Eric J Velazquez
1University Health Network in Toronto, University of Toronto, Toronto, Canada. peter.liu@utoronto.ca
Insights
Angiotensin II receptor blockers (ARBs) offer a well-tolerated and effective alternative to ACE inhibitors for managing heart failure and left ventricular dysfunction, particularly after myocardial infarction.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Left ventricular dysfunction and heart failure are common after hypertension and myocardial infarction.
- The renin-angiotensin-aldosterone system (RAAS) plays a key role in these conditions.
- Targeting angiotensin II (Ang II) is a therapeutic strategy to reduce morbidity and mortality.
Purpose of the Study:
- To evaluate the efficacy and tolerability of Ang II receptor blockers (ARBs) in patients with LV dysfunction and/or HF.
- To compare ARBs with ACE inhibitors for RAAS blockade and patient outcomes.
Main Methods:
- Review of large-scale clinical trials assessing ARBs in patients with LV dysfunction/HF post-MI.
- Comparison of ARB efficacy and tolerability against ACE inhibitors.
Main Results:
- ACE inhibitors reduce mortality and slow disease progression but may not provide complete RAAS blockade and can cause side effects like cough.
- ARBs may achieve more complete RAAS blockade and are generally better tolerated than ACE inhibitors.
- Large trials confirm ARBs are effective and well-tolerated alternatives to ACE inhibitors in this patient population.
Conclusions:
- ARBs represent a valuable therapeutic option for patients with LV dysfunction and/or HF, including those post-MI.
- ARBs provide an effective and well-tolerated alternative to ACE inhibitors for managing RAAS-related cardiovascular complications.
Abstract:
Left ventricular (LV) dysfunction and/or heart failure (HF) are frequent complications of hypertension and myocardial infarction (MI), placing affected patients at increased risk of significant morbidity and premature death. Given that the renin-angiotensin-aldosterone system (RAAS) is activated and of pathophysiological importance in such patients, a strong therapeutic rationale exists to target the main effector mechanism (that is, angiotensin II [Ang II]) in order to lessen the associated morbidity and mortality burden. Angiotensin-converting enzyme (ACE) inhibitors have been shown to reduce mortality and LV dysfunction and to slow disease progression in patients with HF, including high-risk, post-MI patients. However, ACE inhibitors (ACE-Is) may not provide optimal long-term RAAS blockade (a finding that is associated with a worse prognosis) and many patients are unable to tolerate such therapy (because of troublesome dry cough, for example). In contrast, Ang II receptor blockers (ARBs) may block the RAAS more completely than ACE-Is and appear to be better tolerated. Several large-scale trials gave evaluated the efficacy of ARBs in patients with LV dysfunction and/or HF (including high-risk, post-MI patients), and have confirmed their utility as an efficacious and well-tolerated alternative to ACE-Is in this setting.
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